smolna svetlica
smolna svetlica
a mineral consisting of uranium oxide and trace amounts of radium and thorium and polonium and lead and helium; uraninite in massive form is called pitchblende which is the chief uranium ore [mineral, ki vsebuje uranov oksid in sledi radija, torija, polonija, svinca in helija; uraninit v masivni obliki se imenuje pitchblende, ki je glavna uranova ruda.]
Dostopnost
Dostopnost